My favs by category!
Stadiums synonymous with DCI (fan vibe):
Camp Randall-Madison, WI
J. Birney Crum-Allentown, PA
Mt. Hope HS-Bristol, RI (I think it is Mt. Hope, I know it's in Bristol and that city is just awesome for DCI)
Best Grass for performers:
Columbus Crew Stadium-Columbus, OH (I promise, better than Invesco Field @ Mile High or Kyle Field in College Station, TX though the latter was for marching band)
Breathtaking facilities:
Invesco Field at Mile High-Denver, CO
Movie Gallery Stadium-Troy, AL (I was surprised)
Cutest fans:
Sevier County HS-Sevierville, TN
Stadiums that are underrated period:
Gorilla Stadium-Pittsburgh, KS
Warrior Stadium-Elizabeth, PA